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(No Model.) 6 Sheets- Sheet 1. J. SIDDELEY 80 P. N. MAGKAY.

APPARATUS FOR REFRIGERATING OILS, FATS, 650. No. 277,797. Patented May 15,1883.

(No Model.) 6 Sheets-Sheet 2. J. SIDDELEY & P. N. MACKAY.

APPARATUS FOR REFRIGERATING OILS, FATS, &c. No. 277,797. Patented May 15,1883.

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g 7 1 E 74 642M m N. PETERS. Pvoluliihognphur. Wnhinglcn, D. C.

(No Model.) 6 Sheets-Sheet 3.

J. SIDDELEY 87F. N. MAGKAY.

APPARATUS FOR REFRIGERATING OILS, FATS, 8:0.

170. 277,797. A Patented May 15,1883.

177m AWL (No Model!) 6 Sheets--Sheet 4.

J. SIDDELEY 85 F. N. MAOKAY.

APPARATUS FOR REFRIGERATING OILS, FATS, &c. No. 277,797. Patented May 15,1 883.

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N. PETERS. Plwla-l'nhom mr. Waihinglcn. D. c.

(No Model.) 6 Sheets-Sheet 5. J. SIDDELEY & P. N. MAGKAY.

APPARATUS FOR RBPRIGERATING OILS, FATS, &c. No. 277,797. Patented May 15,1883.

V N. PETERS, Phnio-Limogmplwr, Waslungton. 0.0.

(No Model.) 6 Sheets-Sheet 6. J. SIDDELBY & F. N. MAGKAY.

APPARATUS FOR REFRIGERATING OILS, FATS, 850.

No. 277,797. Patented May 15,1883

fi s/0 s A V -Z vzverzzar'as M 7 W267 my M5 UNITED STATES PATENT "FFIQE.

APPARATUS FOR REFRIGERATING OILS, FATS, 84.0.

SPECIFICATION forming part of Letters Patent N0. 277,797, dated May 15, 1883.

Application filed November 15, 1882.

To all whom it may concern Beit known that we, JOHN SIDDELEY and FREDERICK NOEL MAoKAY, of Liverpool, England, have invented a new-and Improved Apg paratus for Refrigerating Oils, Fats, 850., of which the following is a specification. This invention relates to a new machine for refrigerating oils, fats, &c., as a preliminary step to the extraction therefrom of the 'paraffine, anthracine, stearine, and other analo-.

gous substances.

To an extent the invention is based upon that described in English Patent No. 4,857 of 1877. In that machine is shown a metal drum [5 so arranged that its outer surface revolves in a pan containing the oil, while its inner surface is kept cool by the refrigerating apparatus, whereby the oil which adheres to the revolving surface of the drum has its tempera- 2o ture reduced to the required degree, and in this congealed or crystallized condition is exposed to pressure to extract the liquid from its solid or crystallized parts, the latter furnishing paraffine, stearine, or other analogous 2 article to be manufactured.

Our present improvement has reference, in the first place, to the'application to said drum of certain scrapers or knives for removing the oil so frozen from the surface ofthe drum,

0 which scrapers operate in combination with a certain adjustable gage, which regulates the quantity of oil taken up by the drum from the pan or reservoir.

The second feature of our invention has reference to the interior arrangement of the drum; and it consists in placing a cooling-worm into the drum for the reception of the return liquid spirit from the condenser or regulator of the refrigerating-machine, in which Worm the re- 40 turn liquid spirit is cooled by the vapor in the drum previous to its coming in contact with the inner surface of the drum.

Ourinvention relates, further, to the arrangement of the discharge-nozzles within said drum,

' 5 through which nozzles the cooling-liquid is ejected into contact with the interior surface of the drum; and it consists,in this connection, in applying certain spreaders to the nozzles, so that a. spray of liquid is formed, and yet the hole through which the liquid is ejected is not contracted by the freezing of the liquid therein. Thesejetpipes, throwing the freezing-liquid against the inner surface of the drum, are also one of the features of our invention, and are particularly effective upon that surface of the drum which is not dipped into the pan of oil, and which is contained between the above-mentioned gageand scraper. The drum is in connection with a vacuumpump, which discharges the vapor drawn from the drum into a condenser, whence the liquid passes through a regulator, and from there goes back to the drum.

A further feature of our invention is the leading ofa pipe from the regulator or condenser into the lower part of the drum, through which pipe any uncondensed gas which may have accumulated in the condenser may be passed into the liquid spirit that lies at the bottom of the drum.

We regard the application of the collector or regulator between the condenser and the drum as another important feature of our invention. Into this collector or regulator the condensed spirit may run, and from it said condensed spirit will pass to the drum. The collector also receives any water which the spirit may con tain. It controls the action of the apparatus with the view toward preventing the pump from acting directly on the liquid contents of the condenser. In other words, the regulator is interposed between the condenser and the drum in which the vacuum is to be produced,

so that the pump will not cause a vacuum to be produced in the condenser; and to this end 8 the regulator has a self-acting float-valve, that interposes a definite barrier between the drum and condenser whenever the height of the liquid in the regulator is not sufficient to prevent the pump acting through it without said barrier. Thus the regulator prevents the suction from drawing uncondensed vapors into the drum.

Another feature of our invention has referen cc to the construction ot'the condenser, which 9 5 is made with perforated troughs in its several conduits, so that the heavy spirits which become first condensed will in form of a spray from these troughs assist in condensing the vaporized spirits, and in thus reducing the worktoo ,jacketing at the heads of the pump.

- denser.

ing-pressure on the condenser and increasing the work done at each stroke of the vacuumpump.

The invention further consists in a new construction of the vacuum-pump, as particularly applicable to the refrigerating apparatus; and itconsists in so arranging the pump-valves that the suction and discharge valves are close to each end of the valve-chamber, and can both be removed by taking off one ofv the heads, which arrangement further reduces the space between the two valves and the piston ot' the pump when the same is at the end of its stroke, and allows of the use of but one port at each end of the pump for the double-acting vaporpump, through which port the vapor coming to the pump enters and leaves, so that the temperature of the. pump is kept more even than when separate ports are used.

Finally, our invention consists in the application of water-jackets to the heads of the vac-' hum-pump to inclose the stuffing-box with water and prevent the heating of said stuffingbox, at the same time removing heat that may be formed by compression at or near the ends of the pump.

In the accompanying drawings, Figure 1 is a plan or top view of our improved apparatus, showing the general relative arrangement and disposition of the moreimportant parts thereof. Fig. 2 is a side elevation thereof. Fig. 3 is a verticalcross-section ot' the refrigerating drum and pan into which it dips and of the vessel into which it discharges. Fig. 4 is a vertical longitudinal section of the said drum. Fig. 4 is a side elevation of jet-pipe and spreader. Fig. 5 is a detail longitudinal section of the pump-chamber, showing the water- Fig. 6 is a side elevation, partly in section, of the con- Fig.7 is a vertical cross-section of said condenser, taken on the plane of the line 0 c, Fig. 6. Fig. 8 is a vertical central longitudinal section of the regulator. Fig. 9 is a similar section of a modification of said regulator. Fig. 10 is a detail longitudinal central section of oneendof thepump-valvebox. Fig. 11 is arside view of the same.

With reference first to the general features shown in Figs..1 and 2, the letter A therein represents the actuating steam-engine. B is the vacuum-pump; 0, its valve-chest; D, the suction-pipe leading to the pump; E, the re- .frigerating-drum; F, the oil-tank into which the drum dips; G, the vessel into which the drum discharges the frozen oil; H, the discharge-pipe from the pump into the condenser I; J, the pipe from the condenserinto the reg-' ulator K; L, the liquid-discharge pipe fromthe regulator to the drum E, and M the gas-discharge pipe from the regulator to the drum.

Nshows the pump for withdrawing the cooled contents from the receiver Gr and forcing them into the filter-presses 0 through pipe P. Q, is a pump for feeding the oil into the tank F. The pump R is used for blowing through the filter-presses. The parts marked E, F, and G are more fullyshown in Figs. 3 and 4,'the coudcnser I in Figs. 6 and 7, the regulator K in Fig. 8, and the modification thereof in Fig. 9, the valve-chamber O in Figs. 10 and 11, and the pump-cylinder B in Fig. 5.

' Now, with reference first to Figs 3 and 4, it will be seen that the drum E, which hangs on suitable bearings, and which receives a slow rotary motion by suitable mechanism in the direction of the arrow shown in Fig. 3, dips into the tank F, that contains the oil, and is intended to carry a film of that oil during the said rotation. The outlet-opening for the discharge of sediments from the tank F is during operation plugged up by suitable cock or plug. The thickness of the film of oil taken up by the cooling-drum E is regulated by the adjustable gage a, which, when set nearer to the drum, renders the film thinner,but maybe set to allow more oil to be taken up. The film -of oil thus carried by the drum is frozen on its surface during said slow rotation, and is then taken oit' by the scraper I) and discharged into the vessel G, which contains asuitable agitator, d. Thisscraper b is pressed against the periphery of the drum by a spring or springs, 0, so as to keep absolnte contact with the drum, but not cause undue friction. The pipe D leads into a box,f, in which one ofthe hollow trnnnions of the drum E revolves, as shown in Fig. 4, so that the vacuum-pump will draw the vaporous contents out of the drum. Through the center of the drum E passes also a pipe, 9, which connects with the pipe L, that comes from the regulator. The pipe 9 has a partition, h, which divides its outer portion entirely from the inner portion. Outside of this partition h the pipe g connects with the worm i, which worm at its farther end connects with that part of the pipe 9 that is inside of the partition h. 0n the pipeg are also supported on the inner side of,,the partition h discharge or jet pipes S S. These pipes S stand preferably vertically on the fi'xed pipe g, and have very minute discharge-openings at their upper ends for the escape of the liquidcooling substance. These discharge-openings are near to fan-shaped spreadersj, that are pivoted to the discharge ends of the pipes S, and

.proy ided with weighted arms, as indicated in the detail Fig. 4, near Fig. 4, and also in Fig. 4. The liquid or spirit that enters-the drum through the pipe L passes through the pipe 9 ,into the worm i, thence into the inner part of the pipe 9 up.into the pipes S S. The suction created by the pump will cause the liquid to I y and that the single little discharge-opening on scraper b, as is more fully indicated in Fig. 3,

- with the inner surface of the drum.

so that the film of oil on the drum will feel the effect of the freezing-mixture between the said gage and said scraper. The worm't', being in the drum, will cause the liquid spirit from the regulator to become cooled by the contents of the drum previous to its coming in contact The pipe M, from the upper part ofthe regulator K,leads also into the drum, connecting with a pipe, I, which passes centrallythrough the pipe'g, and is then carried down within the drum into the lower part thereof, and perforated in its lower portion, as clearly shown in Fig. 4. Through these pipes M and Z the uncondensed gas is taken from the regulator should it accumulate tl'ierein,and carried through the holes of the pipe 1 into the liquid spirit that lies at the bottom of the drum E, to be condensed by the same, ifpossible, or thoroughly cooled, at least.

The regulator K, which is more clearly shown in Fig. 8, receives the partly-condensed liquid or substance from the condenser I through the pipe J,and discharges theliquid again through the pipe L, (see Fig. 8,) which pipe L extends some distance into the hotly ul chamber of the regulator, and is by preference perforated therein, as indicated. A valve, m, closes the inner orifice to the regulating-chamber K under the influence of a float, a, whenever said float is not raised by the liquid contents of the chamber K, so that thus, it there is not sufficient liquid in the regulator, the valve at will be closed, and consequently the suction-pump acting through the drum E and pipe L will not be able to draw from the condenser it there is not enough liquid in the regulator; but if there is enough liquid in the regulator to cause the float to open the valve m, that column of liquid will sutfice to seal thepipeJagainst snchsuction and in order to get this column more effective the modification of the regulator shown in Fig. 9 may be preferred, because there the regulator is shown in a vertical rather than horizontal position, producing thus a higher column of liquid, for the purpose of sealing thepipe that leads into it from the condenser. The regulator isjacketed with water, as shown in Fig. 8, and connected with asuitablegage, and may have the water circulation in connection with that surrounding the condenser; but this feature is not essential to the purposes ofthis invention. The pipe L, where it is contained within the regulator, is perforated at its lower portion and closed at its end, so that it will carry into the drum 1*] only the liquid from the bottom of the regulator, and not be liable to take any gas with it. Whatever gas may accumulate in V the regulator can pass away uni-pump.

through the pipe Minto the pipe lot" the drum, as already stated. The pipe M enters the upper part of the regulator, as shown in Fig. 8, to receive the accumulated gas from that portion thereof. Whatever water may settle at the bottom of the regulator from the spirits given at the beginning of the operation can be drawn off by the cock 0. (Shown in Fig.8.)

The condenser I (more fully shown. in Figs. 6 and 7) receives the charges from the pump by the pipe H into two (more-or less) systems of zigzag conduits,pthat is to say, each of these systems or conduits consists of a series of horizontal pipes, p and vertically-alternatingconnectionsp". Withineach horizontal portion 19 is placed a perforated trough, q, haw iug holes at its lower edge, so that whatever liquid may coudensein any one of the pipes 19 will flow into the trough q and pipes p next below, and will be discharged from said trough t hrough the apertures thereof in minute drops or spray, so as thereby to assist in condensing the vaporous contents of the pipe within which said spray is caused to fall. Thus, by the arrangement of these troughs in the horizontal pipes of the condenser, the portions of the vapors that have already been condensed will be made to assist in condensing the remainder, thus economizing-materially in the expense of producing proper condensation and increasing the work done at each stroke of the vacu- The piper (shown in Fig. 6) is the wateroverflow pipe from the condenser.

The pump-valves, which are more clearly shown in Fig. 10, are also of peculiar arrangement. i

In Fig. 10, 0 represents the valve-box and 8 one of the ports leading from such valve-box into the pump-chamber. It is to be understood that the valve'box has two such ports, one leading into each ofthe ends of the pumpchamber proper. The suction-pipe D enters the valve-box between the twoinlet-valres, of which one, 1., is shown in Fig. 10. These inlet-valves if, under the influence ot' a spring, a, close the communication between the central part of the chamber 0 and the respective ports whenever the machines are at rest; but when the plunger of the pump creates suction in one of the ports by moving away from it the valve tpertainiug to that port will be drawn open, and the vapors from the drum will be drawn into the pump-chamber through the opening thus produced. hen the stroke ofthe pump is afterward reversed thesaid open valve it will be immediately closed, and at the same time the outlet-valve 10, which normally separates the port 8 from the end chamber, or, of the valvebox, will be pushed open, allow ing the vapors to be passed into the said end chamber, or, from which they will pass into the pipe H through the passageindicated by dotted lines in Fig. 11. It will be perceived that the two valves t anti w, pertaining to a port, 8, being placed near together anti near the port 8, can both be reached by opening one of the IIO covers of the chamber 0, and, moreover, by 5. The drum E, connected with the vacuumtheir arrangement, as shown, they allow the same port to be first an inlet and then an outlet port for the pump-chamber, thereby causing a certain evenness of temperature, which is impossible when one port is an inlet onlyand the other an outlet only, since the inlet will invariably be colder than the outlet port. The valve 20 is normally closed against itsseat by a spring, y.

a, Fig. 10, represents a cam or toe on a suita- -ble arm placed near the stem or other portion of the suction-valve t, for the purpose of holding said valve 15 open mechanically during any part of the operation. We find this to be desirable at the startin got the apparatus, so as to leave the pump practically out of operation at the beginning when the engine is first charged with rotating the drum, causing the vapor to b the head a forming a chamber around the I stuffing-box of the plunger-rod, preventing the same from becoming heated, and the head 1) covering the other end of the pump-chamber. Not only does one of these water-jacketed heads prevent the stuffing-box becoming overheated, but both have the further object of removing whatever heat may be formed by compression at the ends of the pump, thus assisting in keeping the entire pump-chamber uniform in temperature.

The drum can also be used to work with ammonia, gasoline, ether, or any other volatile liquid now in use for producing cold.

We claim- 1. The combination of the freezing-drum E with the oil-supply tank F, adjustablegage a, spring-pressed scraper b, and receiving-vessel G, substantially as and for thepurpose described.

2. The drum E, connected and combined with a vacuum-pump and provided with the worm t, which is in communication with the condenser and with the jet-pipes S within the drum, so that by said worm the liquid spirit from the condenser may become cooled, as specified.

3. Thejet-pipe S, combined with the spreader j, substantially as described.

4. The drum E, combined with gage a, scraper I), oil-tank F, and with inner jet-pipes, b, that discharge against the part of the drtfm which is outside of the tank F and between the said scraper and said gage, substantially as specified.

pump and with the condenser, and provided with the jet-pipes S S, that are supported within the drum, substantially as specified.

6. The combination of the regulator K with the liquid-pipe L and gas-pipe M, and with the drum E and perforated pipe I, all arranged to allow uncondensed gas which may accumulate inthe regulator to be passed into the liquid spiritlying at the bottom of the drum, substantially as described.

7. The regulator K, combined with the condenser I and pipe J, and with the drum E and pipe L, and provided with the valve m and float n, to constitute an effective seal between the said drum and said condenser, substantially as specified.

.8. The regulator K, combined with the discharge-pipe L, which leads into the bottom thereof, and which is perforated on its under side and closed at its inner end, substantiallyas described.

9. The regulator K, combined with the liquid-supply pipe J and liquid-discharge pipe L, and with the gas-discharge pipeM for connection with the drum E and condenser, substantially as specified.

10. In a condenser, the perforated trough q, placed into the horizontal pipe 12 of said condenser, substantially as specified.

11. The valve-chamber 0, having port 3 at each end, combined with the suction-valve i and discharge-valve 10, both of which valves separate said port from opposite portions of" the chamber 0, substantially as described.

the inlet-valve tot the pump for holding it open, substantially as described.

15. Thepump-chamber B, provided with water-jacketed heads a I), substantially as specified.

JOHN SIDDELEY. FREDK. N. MAGKAY.

Witnesses:

J OHN HENRY WILLooX, JOSHUA SIDDELEY, Both 0 f14 Upper William Street, Liverpool.

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